<template>
  <div>

    <!-- 顶部滑动块区域 -->
    <div id="slider" class="mui-slider">
      <div
        id="sliderSegmentedControl"
        class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted"
      >
        <div class="mui-scroll">
          <a
            :class="['mui-control-item',item.id == 0 ? 'mui-active' : '']"
            v-for="item in cates"
            :key="item.id" @click="getPhotoListByCateId(item.id)"
          >{{ item.title }}</a>
        </div>
      </div>
    </div>

    <!-- 图片列表区域 -->
    <ul class="photo-list">
      <router-link tag="li" :to=" '/home/photoinfo/' + item.id" v-for="item in list" :key="item.id">
        <img v-lazy="item.img_url">
        <div class="info">
          <h1 class="info-title">{{ item.title }}</h1>
          <span class="info-body">{{ item.zhaiyao }}</span>
        </div>
      </router-link>
    </ul>
  </div>
</template>

<script>
// 1.导入mui的js文件
import mui from "../../lib/mui/js/mui.min.js";
import { Toast } from "mint-ui";

export default {
  data() {
    return {
      cates: [], //所有分类的列表数组
      list: []   //图片列表的数组
    };
  },
  created() {
    this.getAllCategory();
    this.getPhotoListByCateId(0);
  },
  mounted() {
    // 2.初始化滑动控件
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getAllCategory() {
      //   获取所有图片的分类
      this.$http.get("api/getimgcategory").then(result => {
        if (result.body.status === 0) {
          result.body.message.unshift({ title: "全部", id: 0 });
          this.cates = result.body.message;
        } else {
          Toast("获取图片失败!");
        }
      });
    },
    getPhotoListByCateId(cateId){
      // 根据分类ID,获取图片列表
      this.$http.get("api/getimages/" + cateId).then(result => {
        if(result.body.status === 0) {
          this.list = result.body.message;
        }else{
          Toast("获取数据失败!");
        }
      })
    }
  },
  props: ["id"]
};
</script>


<style lang="scss" scoped>
* {
  touch-action: pan-y;
}

.photo-list{
  list-style: none;
  padding: 10px;
  margin: 0;
  padding-bottom: 0;
  img{
    width: 100%;
    vertical-align: middle;
  }
  li{
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow: 0 0 9px #999;
    position: relative;
    img[lazy=loading] {
      width: 40px;
      height: 300px;
      margin: auto;
    }
    .info{
      max-height: 85px;
      overflow: hidden;
      position: absolute;
      bottom: 0;
      color: white;
      text-align: left;
      .info-title{
        font-size: 15px;
      }
      .info-body{
        font-size: 13px;

      }
    }
  }
}



</style>